Suo-Oshima

Planning your day in Suo-Oshima or just want to stay up to date with the weather? In this section, you'll find current weather information, detailed forecasts, and helpful charts.

The climate in Suo-Oshima, Japan, can be described as temperate, with four distinct seasons. Travelers can expect warm, and sometimes hot, summers and fairly cool but generally mild winters. Spring and autumn are pleasant transitional periods with comfortable temperatures.

The summer months, from June to August, are the warmest: the average temperature in August reaches 27.3°C. This period is also characterized by the highest rainfall and number of rainy days, especially in July, which sees up to 9 mm of precipitation and about 17 rainy days. Winter, by contrast, from December to February, is cooler and drier. Average temperatures hover around 6-9°C, and precipitation is minimal, at just 2 mm in January and December.

Overall, the weather in Suo-Oshima shows noticeable seasonal variations in both temperature and precipitation. The wettest period is mid-summer, while winter and late autumn are the driest. This allows tourists to choose the most suitable time for a visit depending on their preferred weather conditions.

The climate in Suo-Oshima is characterized by significant seasonal temperature variations. Throughout the year, the average temperature varies from a cool 6.8°C in January to a hot 27.3°C in August. Thus, January is the coldest month, with average minimum temperatures dropping to 4.7°C and maximums barely reaching 8.9°C. In contrast, August is the sweltering peak, with average maximum temperatures around 29.2°C and nightly minimums not falling below 25.5°C.

Summer months in Suo-Oshima, especially July and August, bring real heat. The average temperature in July is 25.9°C, and it rises to 27.3°C in August. Daytime highs during this period consistently stay above 27°C, and nights remain very warm. June, with its average temperature of 21.7°C, serves as a transition to the summer heat, offering more comfortable warm weather. Given the significant number of rainy days in the summer months (especially 17 days in July), you can expect high humidity, which makes the heat feel more intense.

Winter in Suo-Oshima is relatively mild but cool. From December to February, average temperatures range from 6.8°C to 8.5°C. Nighttime temperatures in January and February can drop to 4.7°C - 4.8°C, while daytime temperatures rarely exceed 9-10°C. The temperature difference between day and night throughout the year is not very large, usually around 4-5 degrees, indicating a fairly stable temperature profile throughout the day. Spring and autumn months offer pleasant moderate weather, with a gradual increase in temperature in spring (March-May) and a decrease in autumn (September-November).

The city of Suo-Oshima experiences noticeable fluctuations in precipitation throughout the year, though overall levels remain moderate. Given the mild climate, almost all precipitation falls as rain. Snow is extremely unlikely here, as even winter temperatures usually stay above freezing.

The wettest period in Suo-Oshima is summer. Rainfall peaks in July, when an average of about 9 mm falls, and the number of rainy days reaches 17. June is also quite a wet month with 8 mm of precipitation and approximately 13 rainy days. During this period, rain can be more frequent, although total precipitation amounts are not extremely high.

The driest months in Suo-Oshima are considered to be late autumn and early winter. November, December, and January see the lowest amount of precipitation—only about 2 mm in each of these months. December also stands out with the fewest rainy days—an average of 7. October is also relatively dry, with 4 mm of precipitation and about 8 rainy days. During these months, the chance of encountering rainy weather is significantly lower.

When planning a trip to Suo-Oshima, it's important to consider the variable weather throughout the year to ensure a comfortable stay. A key packing principle is layering. This will allow you to easily adapt to temperature changes throughout the day. Regardless of the season, be sure to pack comfortable walking shoes, as you'll surely want to explore the surroundings. Given that rainy days occur year-round, even with low total precipitation in some months, a light umbrella or a compact raincoat will be your reliable companions.

Winter months (December to February) in Suo-Oshima are quite cool, with average temperatures around 6-8°C. You'll need warm clothes: sweaters, fleece jackets, an insulated jacket (preferably windproof and waterproof), a hat, gloves, and a scarf. In spring (March-May) and autumn (September-November), the weather is milder but still changeable. Average temperatures range from 10°C to 18°C in spring and from 24°C to 14°C in autumn. During these periods, a light jacket, cardigans, and both long-sleeved and short-sleeved T-shirts that can be layered are ideal.

Summer (June-August) in Suo-Oshima is warm and humid, with average temperatures reaching 21-27°C. June and July are also the months with the highest rainfall and number of rainy days. Pack light, breathable clothing made of natural fabrics: T-shirts, shorts, and sundresses. Don't forget a hat, sunglasses, and high-SPF sunscreen to protect yourself from the sun. Despite the summer warmth, a light waterproof jacket or an umbrella will still be useful due to the possibility of rain.